[HLE] Renamed INotificationServicesForSystem and implemented a few commands and stubs (#6)

Should allow Ring Fit and other games that rely heavily on the notification system to get in-game (?), needs testing.

if you're wondering what happened to the first branch -- no you're not. (duplicated history somehow??)

Reviewed-on: https://git.ryujinx.app/projects/Ryubing/pulls/6

src/Ryujinx.HLE/HOS/Services/Notification/INotificationServicesForApplication.cs

@@ -1,8 +1,33 @@
+using Ryujinx.Common.Logging;
+
 namespace Ryujinx.HLE.HOS.Services.Notification
 {
     [Service("notif:a")] // 9.0.0+
     class INotificationServicesForApplication : IpcService
     {
         public INotificationServicesForApplication(ServiceCtx context) { }
+        
+        // Leaving this here since I can never find it: https://switchbrew.org/wiki/Glue_services
+        
+        [CommandCmif(520)] // 9.0.0+
+        // ListAlarmSettings(nn::arp::ApplicationCertificate) -> s32 AlarmSettingsCount
+        public ResultCode ListAlarmSettings(ServiceCtx context)
+        {
+            // TO-DO: Currently just returns 0. Should read in an ApplicationCertificate.
+            int alarmSettingsCount = 0;
+            context.ResponseData.Write(alarmSettingsCount);
+            return ResultCode.Success;
+        }
+
+        [CommandCmif(1000)] // 9.0.0+
+        // Initialize(PID-descriptor, u64 pid_reserved)
+        public ResultCode Intialize(ServiceCtx context)
+        {
+            ulong pid = context.Request.HandleDesc.PId;
+            context.RequestData.ReadUInt64(); // pid placeholder, zero
+            
+            Logger.Stub?.PrintStub(LogClass.ServiceNotification, new { pid });
+            return ResultCode.Success;
+        }
     }
 }